I’ll try and help Newquay. I too know someone like this, in fact I used to work with them. Little by little she shared information about what had happened in her life beforehand. Over time I learnt that she had virtually no self-awareness in the present. Her past was full of sadness and alone-ness, with uncaring remote parents who place her in boarding school at an early age, failing in education, a series of random jobs, little companionship, poor social skills. By the time I knew her she would readily acknowledge that she wasn’t ‘like others’ and could adjust her behaviours to avoid upsetting others. But she took refuge in a world of her own imagination particularly when under stress, telling mistruths as they were often easier than reality. I still see her, she’s well and seems happy, but in her mid50s she’s still ‘apart’ from the rest of the world. Perhaps your friend has a similar back story.